﻿using System;

class NullableTypes
{
    static void Main()
    {
        int? var1 = null;
        double? var2 = null;

        Console.WriteLine("Nullable values: int {0}; double {1}",var1,var2);

        var1 += 5;
        var2 += 5.55d;

        Console.WriteLine("Nullable variables: int var = {0}; double var = {1}", var1, var2);
    }
}

